Question

In a VB6 application, I have a Dictionary whose keys are Strings and values are instances of a custom class. If I call RemoveAll() on the Dictionary, will it first free the custom objects? Or do I explicitly need to do this myself?

Dim d as Scripting.Dictionary  d('a') = New clsCustom d('b') = New clsCustom  ' Are these two lines necessary? Set d('a') = Nothing Set d('b') = Nothing  d.RemoveAll 

Answer 1

Yes, all objects in the Dictionary will be released after a call to RemoveAll(). From a performance (as in speed) standpoint I would say those lines setting the variables to Nothing are unnecessary, because the code has to first look them up based on the key names whereas RemoveAll() will enumerate and release everything in one loop.